bool b=connect(myTable,
          SIGNAL( currentCellChanged ( int, int, int, int) ),
          this,
          SLOT( myFnc(int, int , int , int  ) )
          );     

#include <QtGui>
#include <QtSql>

#include "dlgTest.h"

int main(int argc,char **argv)
{

    QApplication app(argc, argv);
    
    QTextCodec *codec = QTextCodec::codecForName("CP1251");
    QTextCodec::setCodecForTr(codec);
    QTextCodec::setCodecForCStrings(codec);
    QTextCodec::setCodecForLocale(codec); 
    

    QSqlDatabase db = QSqlDatabase::addDatabase("QIBASE");
    db.setDatabaseName("test_DB");
    db.setUserName("SYSDBA");
    db.setPassword("masterkey");
    //db.setHostName("localhost");
    if(!db.open()) 
    {
      QMessageBox::information( 0 ,
                               QObject::tr("eRRoR"),
                               QObject::tr("<b>can't</b> connect to database \"test_DB\"")
                               );
      return  1 ;	
   	}
  
    dlgTest dlg;
    dlg.showAll();
    return app.exec();
}

#ifndef UI_DLGTEST_H
#define UI_DLGTEST_H

#include <QtCore/QVariant>
#include <QtGui/QAction>
#include <QtGui/QApplication>
#include <QtGui/QButtonGroup>
#include <QtGui/QDialog>
#include <QtGui/QLabel>
#include <QtGui/QTableView>
#include <QtGui/QVBoxLayout>

class Ui_dlgTest
{
public:
    QVBoxLayout *vboxLayout;
    QTableView *tableView;
    QLabel *lbInfo;

    void setupUi(QDialog *dlgTest)
    {
    if (dlgTest->objectName().isEmpty())
        dlgTest->setObjectName(QString::fromUtf8("dlgTest"));
    dlgTest->resize( 400 ,  300 );
    vboxLayout = new QVBoxLayout(dlgTest);
    vboxLayout->setObjectName(QString::fromUtf8("vboxLayout"));
    tableView = new QTableView(dlgTest);
    tableView->setObjectName(QString::fromUtf8("tableView"));

    vboxLayout->addWidget(tableView);

    lbInfo = new QLabel(dlgTest);
    lbInfo->setObjectName(QString::fromUtf8("lbInfo"));

    vboxLayout->addWidget(lbInfo);


    retranslateUi(dlgTest);

    QMetaObject::connectSlotsByName(dlgTest);
    } // setupUi

    void retranslateUi(QDialog *dlgTest)
    {
    dlgTest->setWindowTitle(QApplication::translate("dlgTest", "Dialog",  0 , QApplication::UnicodeUTF8));
    lbInfo->setText(QApplication::translate("dlgTest", "TextLabel",  0 , QApplication::UnicodeUTF8));
    Q_UNUSED(dlgTest);
    } // retranslateUi

};

namespace Ui {
    class dlgTest: public Ui_dlgTest {};
} // namespace Ui

#endif // UI_DLGTEST_H

#ifndef __dlgTest_H__
#define __dlgTest_H__

#include "ui_dlgTest.h"

class QSqlQueryModel;

class dlgTest: 
      public QDialog,
      public Ui_dlgTest
{
    Q_OBJECT

    QSqlQueryModel *sqlmodel;
  public:  
    dlgTest(QWidget *parent= 0 );  
    
  public slots:
    void  showAll();
    void  testSLOT(int currentRow, int currentColumn, int previousRow, int previousColumn ); 
 
};

#endif // __dlgTest_H__

#include <QtSql>
#include <QMessageBox>

#include "dlgTest.h"

dlgTest::dlgTest(QWidget *parent):QDialog(parent)
{
  setupUi(this);
  sqlmodel=new QSqlQueryModel();
}  
//----------------------------------------------------------------------------
void dlgTest::testSLOT(int currentRow, int currentColumn, int previousRow, int previousColumn )
{
  lbInfo->setText( QString::number(currentRow)+" from currentCellChanged()" );
}
//----------------------------------------------------------------------------
void dlgTest::showAll()
{
  bool b=
  connect(tableView,
          SIGNAL( currentCellChanged(int, int, int, int) ),
          this,
          SLOT( testSLOT(int, int, int, int) )
          );
  if( !b )
    QMessageBox::information(this, tr("eRRoR"), tr("!connect"));  
    
  sqlmodel->setQuery("select * from rec_type"); 
  tableView->setAlternatingRowColors( 1 );
  tableView->setModel(sqlmodel);  
  lbInfo->setText( QString::number(sqlmodel->rowCount()) );
  show();  
}

TEMPLATE = app
TARGET =
DEPENDPATH += .
INCLUDEPATH += .
FORMS += dlgTest.ui \

SOURCES += main.cpp \
           dlgTest.cpp \

HEADERS += ui_dlgTest.h \
           dlgTest.h \

QT += gui core sql
CONFIG += release qt resources 

test.exe